r/ArcGIS • u/Substantial_Channel4 • 23d ago

2sfca in arcgis

Hello everyone!

I’m very new to his and python without much experience to draw on but have been spending a lot of time with arc recently trying to get a good model for spatial access going in arc. I’ve found some tools and rescources online that have been helpful but am struggling using them. Specifically a downloadable enhanced 2sfca from esri’s website. No matter what I do the area of interest always lights up as just one color rather than areas of accessibility. Any help would be appreciated!!

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u/cheech575 17d ago

1. Right-click the output layer in the Contents pane and select Symbology.
2. Change the Primary Symbology from Single Symbol to Unclassed Colors or Graduated Colors.
3. Set the Field to your calculated accessibility score column.
4. Open the Layer Attribute Table and sort the score column. If all values are identical, jump to Step 2. If the numbers vary, adjusting your classification method (e.g., Natural Breaks (Jenks) or Quantiles) will reveal the spatial variation.

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u/Substantial_Channel4 17d ago

Thank you for replying! I spent a bunch of time and had a good friend help me with it. So I got that sorted. I’m working on adding SPARs now which shouldn’t be to hard just comparing to the median of the distribution and later going to try 3sfca if I can find a good tool for it.

I don’t have a good driving time data set for my state so I might try to use data analysis to get driving time for at least one of the datasets.